A Top Quality Cretoxyrhina mantelli tooth, the Ginsu shark, from Gove Co., Kansas. An excellent example of this Cretaceous shark. Upper Cretaceous Period. Niobrara Formation. Authenticity guaranteed. Near perfect tooth.
KS017 SIZE: 5/8"+
Note - Adding 18 new Cretoxyrhina mantelli teeth in May 2026. Link to Kansas Cretoxyrhina teeth
This catalog contains exceptional teeth from what is thought to be the earliest ancestor to the Mako and Great White sharks - Cretoxyrhina mantelli, the Ginsu shark (an early Lamnid shark). The Cretoxyrhina sharks were among the largest predators of their time and therefore ruled the Cretaceous seas. These teeth were found in the Smoky Hill Member, Niobrara Chalk Fm. of Gove and Ness Co., Kansas which was part of the great inland sea area of North America during the Cretaceous (80-90 million years ago). The Cretoxyrhina mantelli makes a great addition to the evolution of the Mako and Great White sharks collection. These teeth are high quality - extra nice condition and preservation. Our biggest and best selection ever of the scarce species!
